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In page Aeacus:

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Aeacus was also believed by the Aeginetans to have surrounded their island with high cliffs in order to protect it against pirates.[2] Several other incidents connected to the story of Aeacus are mentioned by Ovid.[3] By Endeïs Aeacus had two sons, Telamon (father of Ajax and Teucer) and Peleus (father of Achilles), and by Psamathe a son, Phocus, whom he preferred to the former two sons, both of whom conspired to kill Phocus during a contest, and then subsequently fled from their native island.[citation needed]